Powersmart B8721S2 3-In-1 Lawn Mower 21" Self-Propelled 140cc Gas Engine Red NewThe Powersmart B8721S2 is a 140cc gas engine lawn mower that delivers unbeatable power and is capable of efficiently mowing a 1 2 acre yard on a single tank of gas. This mower is capable of mulching, rear discharge, and bagging, 3 in 1 to meet the different cutting needs of different mowing seasons. The single lever height adjustment has 6 positions from 1. 5" to 3. 9", suitable for all types of grasses.